Keithley Instruments offers Component Test Fixture for Low Voltage Device Testing. Keithley Instruments is an ISO 9001:2000 ISO 14001 and ISO 17025 awarded company. Component Test Fixture for Low Voltage Device Testing is designed for basic device testing in applications such as quality assurance, failure analysis or incoming inspection labs, research environments, etc. Component Test Fixture for Low Voltage Device Testing, available in two models, uses standard Triax cables to connect to SMUs with Triax connectors.